I do have severe TMJ, which I also thought was a likely culprit. My
mouth cannot
open or close without the massive popping of my
jaw. Basically any movement of my
jaw causes it, and it can be quite irritating at times, but usually not painful.
As for lymph nodes, I was incorrectly diagnosed with lymphoma early last year, and only found out it was not through a biopsy of my right-side lymph node in my neck.